<%@ page contentType="image/jpeg" import="com.common.CreateImgYanZhengMa"%><%
response.setHeader("Pragma","No-cache");
response.setHeader("Cache-Control","no-cache");
response.setDateHeader("Expires", 0);

CreateImgYanZhengMa rc = new CreateImgYanZhengMa(response,4,"abdfghijklmnopqrstuvwxyz1234567890");

String rand = rc.createRandImage();
session.setAttribute("rand",rand);
%>